which Fortigatemodel for two lines 100/40 Mbit pppoe?

Hello,

question about handling two 100/40 Mbit vdsl lines over pppoe. Which is the best model to handle the traffic at full speed, with IPS activated. Read about, that pppoe give much overhead on the Firewall-CPU.

At start i have here an 60C with an 20/2 Mbit line, the 100/40 Mbit lines will come later this year.

So i'll see what i get here on load on the Fortigate.

So which model are here preferred for an new one. 

60D

80D

90D

92D

or must i go up to the 100D?

any hints where to go?

Regards

Ingo